openssl rsautl -encrypt -in beforePubEncrypt.txt -inkey public.pem -pubin -out afterPubEncrypt.txt
openssl rsautl -decrypt -in afterPubEncrypt.txt -inkey private.pem -out afterPrivateDecrypt.txt 
openssl rsautl -sign -in afterPrivateDecrypt.txt -inkey private.pem -out afterPrivateEncrypt.txt 


